content: /*
   * Copyright 2017 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package hu.akarnokd.reactive4javaflow.impl.operators;
  
  import static org.junit.Assert.*;
  
  import java.io.IOException;
  
  import hu.akarnokd.reactive4javaflow.*;
  import hu.akarnokd.reactive4javaflow.functionals.CheckedBiFunction;
  import hu.akarnokd.reactive4javaflow.processors.DirectProcessor;
  import org.junit.Test;
  
  public class ParallelReduceFullTest {
  
      @Test
      public void cancel() {
          DirectProcessor<Integer> pp = new DirectProcessor<>();
  
          TestConsumer<Integer> ts = pp
          .parallel()
          .reduce((a, b) -> a + b)
          .test();
  
          assertTrue(pp.hasSubscribers());
  
          ts.cancel();
  
          assertFalse(pp.hasSubscribers());
      }
  
      @Test
      public void error() {
          TestHelper.withErrorTracking(errors -> {
              Folyam.<Integer>error(new IOException())
                      .parallel()
                      .reduce((a, b) -> a + b)
                      .test()
                      .assertFailure(IOException.class);
  
              assertTrue(errors.isEmpty());
          });
      }
  
      @SuppressWarnings("unchecked")
      @Test
      public void error2() {
          TestHelper.withErrorTracking(errors -> {
              ParallelFolyam.fromArray(Folyam.<Integer>error(new IOException()), Folyam.<Integer>error(new IOException()))
              .reduce((a, b) -> a + b)
              .test()
              .assertFailure(IOException.class);
  
              TestHelper.assertError(errors, 0, IOException.class);
          });
      }
  
      @Test
      public void empty() {
          Folyam.<Integer>empty()
          .parallel()
          .reduce((a, b) -> a + b)
          .test()
          .assertResult();
      }
  
      @Test
      public void doubleError() {
          TestHelper.withErrorTracking(errors -> {
              new ParallelInvalid()
              .reduce((a, b) -> "" + a + b)
              .test()
              .assertFailure(IOException.class);
  
              assertFalse(errors.isEmpty());
              for (Throwable ex : errors) {
                  assertTrue(ex.toString(), ex instanceof IOException);
              }
          });
      }
  
      @Test
      public void reducerCrash() {
          Folyam.range(1, 4)
          .parallel(2)
          .reduce((a, b) -> {
              if (b == 3) {
                  throw new IOException();
              }
              return a + b;
          })
          .test()
          .assertFailure(IOException.class);
      }
  
      @Test
      public void reducerCrash2() {
          Folyam.range(1, 4)
          .parallel(2)
          .reduce((a, b) -> {
              if (a == 1 + 3) {
                  throw new IOException();
              }
              return a + b;
          })
          .test()
          .assertFailure(IOException.class);
      }
  }
  